Surf Forecasts:
Kennebunk Beach surf forecast from 18 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 8PM (local time) - 3.5ft (1.0m), 8s period, SE swell with 138 kJ wave energy.
Best Forecast Surf Conditions for Kennebunk Beach this week:
The most powerful waves expected at Kennebunk Beach in the next 16 days are 1.0m 8s and forecast to arrive on Tuesday (Aug 18) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Aug 21) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Tue 18th Aug) | 3.5ft (1.0m) 8s |
Table - best surf conditions forecast for Kennebunk Beach over the next 16 days.
The Lowdown
Alright folks, same story, just in feet and degrees. It’s a pretty grim outlook for Kennebunk Beach across this whole 16-day run. Honestly, there’s hardly a ripple worth chasing.
From Tuesday the 18th of August, it’s a wall of “poor surf conditions” with barely anything on offer. Swell heights are almost all under 3ft, mostly between 0.7ft and 3ft. The energy is weak, with most days sitting under 100 (weak wave energy) and only a couple afternoons climbing into the moderate range, like 138 or 142 (moderate wave energy). Directions are stuck from the SE or ESE, which is a tough angle for this fully sheltered spot. It just isn’t working.
Water temps are 67°, which is about 2° warmer than average for this time of year. Not a huge deal, but it’s notable.
If you’re holding out for *one* window, that Wednesday morning on the 2nd of September is your best bet. That’s well over a week away, so treat it as a maybe, but it’s the only glimmer. We’ve got a 2ft swell from the SE with a 13-second period—that’s a nice, long groundswell. The wind is light and the water is glassy clean. Combined energy hits 203 (moderate wave energy). For this beach, that’s the highlight of the whole forecast. Still, it’s only rated as “surfable but ordinary.” Don’t get your hopes up too high.
Every other day is compromised by cross-onshore winds, onshore slop, or just a total lack of swell. A few brief mornings of offshore or glassy wind (like the 20th, 21st, and 23rd of August) pop up, but the waves are so small and weak they won’t even wrap in. It’s a bummer.
Bottom line: Kennebunk Beach goes through these long flat spells. This is one of them. If you’ve got a kite, maybe the afternoons with a breeze and 1-2ft of chop will be more fun for that than for a paddle board.
Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Wed afternoon, min 18°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sun night. Warm (max 23°C on Fri afternoon, min 14°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SE 9 | SE 9 | SE 8 | SE 7 | SE 7 | SE 6 | SE 7 | SE 7 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 5 | SE 7 | SE 7 | SE 12 | SE 12 | SE 11 | SE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 64 | 99 | 48 | 45 | 58 | 65 | 43 | 45 | 43 | 50 | 42 | 35 | 23 | 18 | 15 | 14 | 35 | 34 | 37 | 30 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-on | cross-on | glassy | glassy | on | cross-off | off | cross | cross-off | cross-off | cross-off | cross-off | off | off | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:12PM2.79m | 4:45AM2.46m | 5:01PM2.69m | 5:42AM2.32m | 5:55PM2.61m | 6:41AM2.23m | 6:52PM2.56m | 7:42AM2.20m | 7:51PM2.56m | 8:41AM2.23m | 8:47PM2.61m | 9:34AM2.30m | 9:39PM2.69m | ||||||||
Low Tide | 9:54AM0.26m | 10:30PM0.26m | 10:42AM0.42m | 11:27PM0.36m | 11:35AM0.56m | 00:28AM0.44m | 12:33PM0.65m | 1:31AM0.46m | 1:33PM0.67m | 2:31AM0.44m | 2:31PM0.64m | 3:25AM0.38m | 3:24PM0.56m | 4:11AM0.30m | |||||||
 | |  | | | |  | |  |  | | | | | | | |  |  | | | |
 | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — |
 | — | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:32 | — | — | 7:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 5 | — | — |
Temp °C | 21 | 21 | 19 | 22 | 25 | 24 | 21 | 22 | 21 | 22 | 23 | 20 | 19 | 20 | 17 | 16 | 16 | 17 | 22 | 26 | 21 |
Feels °C | 22 | 22 | 20 | 24 | 24 | 25 | 22 | 21 | 20 | 20 | 20 | 19 | 17 | 18 | 16 | 15 | 16 | 19 | 22 | 23 | 19 |
Swell 1 Height (m) Direction Period (s) | SSE 5 | SE 9 | SE 8 | SE 7 | SE 7 | SE 6 | SE 7 | SE 7 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 5 | ESE 5 | SE 7 | ESE 7 | SSE 6 | SSE 7 | SSE 7 |
| kJ | 9 | 64 | 99 | 48 | 45 | 58 | 65 | 43 | 45 | 43 | 50 | 42 | 35 | 23 | 18 | 14 | 12 | 15 | 7 | 37 | 20 |
Swell 2 Height (m) Direction Period (s) | ESE 4 | SE 5 | — | SE 9 | SE 9 | SE 8 | — | E 16 | E 15 | SE 15 | SE 14 | SE 14 | SE 13 | SE 13 | ESE 7 | SE 7 | ESE 12 | SE 6 | ESE 6 | SE 11 | SE 11 |
| kJ | 4 | 10 | — | 29 | 13 | 24 | — | 5 | 4 | 8 | 8 | 8 | 7 | 7 | 18 | 12 | 14 | 9 | 8 | 32 | 30 |
Swell 3 Height (m) Direction Period (s) | SE 9 | — | — | SE 9 | — | — | — | — | — | E 15 | E 14 | E 14 | SE 13 | SE 9 | ESE 12 | ESE 12 | SE 8 | SE 12 | SE 12 | E 6 | ESE 6 |
| kJ | 12 | — | — | 29 | — | — | — | — | — | 4 | 4 | 4 | 7 | 3 | 15 | 15 | 3 | 35 | 34 | 3 | 4 |
Wind waves Height (m) Direction Period (s) | E 4 | — | — | — | SSE 2 | — | — | SSW 3 | N 3 | NE 3 | — | — | NE 3 | ENE 3 | — | NNE 2 | ESE 5 | — | SW 3 | W 3 | — |
| kJ | 3 | — | — | — | 1 | — | — | 2 | 5 | 3 | — | — | 3 | 1 | — | 1 | 7 | — | 2 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 216 | 231 | 11 | 45 | 48 | 11 | 11 | 62 | 11 | 462 | 324 | 11 | 669 | 919 | 11 | 54 | 128 | 62 | 62 | 11 | 49 |
Best forecast wave conditions in Maine | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Kennebunk Beach Surf forecast
The above surf forecast table for Kennebunk Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kennebunk Beach can be found by selecting the local surf guide option on the grey menu. Our Kennebunk Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kennebunk Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Kennebunk Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Kennebunk Beach is 17 km (11 miles) from Biddeford. If you plan a vacation in Maine, look for hotels and other accommodation in Biddeford. Biddeford has rooms for a wide range of budgets as well as car hire and transport links.
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